Turbulence & Acoustics
FLUENT offers an unparalleled breadth of turbulence models such as several versions of the time-honored k-epsilon model, the k-omega model, and the Reynolds stress model (RSM). Recent increases in computer power, coupled with decreases in cost, have made the large eddy simulation (LES) model and the more economical detached eddy simulation (DES) model very attractive choices for industrial simulations. For acoustics, FLUENT can compute the noise resulting from unsteady pressure fluctuations in several ways. Transient LES predictions for surface pressure can be converted to a frequency spectrum using the built-in Fast Fourier Transform (FFT) tool. The Ffowcs-Williams & Hawkings acoustics analogy can be used to model the propagation of acoustics sources for various objects, ranging from exposed bluff bodies to rotating fan blades. Broadband noise source models allow acoustic sources to be estimated based on the results of steady-state simulations.
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